[rabbitmq-discuss] newbie problem--'Error: unable to connect to node 'rabbit at rabbitmq-small02-dev': nodedown'
johnstoner2 at gmail.com
Fri Mar 16 00:02:28 GMT 2012
aack--I'm wrong, but not really. Looking again I see:
config file(s) : (none)
On Thu, Mar 15, 2012 at 7:00 PM, John Stoner <johnstoner2 at gmail.com> wrote:
> OK, I'm checking about deactivating the firewall with the people working
> with me on this.
> Following your link, I see
> Once a distributed Erlang node address has been resolved via epmd, other
> nodes will attempt to communicate directly with that address using the
> Erlang distributed node protocol. The port range for this communication can
> be configured with two parameters for the Erlang kernel application:
> - inet_dist_listen_min
> - inet_dist_listen_max
> Firewalls must permit traffic in this range to pass between clustered
> nodes (assuming all nodes use the same port range). The default port range
> is unrestricted.
> The Erlang kernel_app manpage<http://www.erlang.org/doc/man/kernel_app.html> contains
> more details on the port range that distributed Erlang nodes listen on. See
> the configuration <http://www.rabbitmq.com/configure.html> page for
> information on how to create and edit a configuration file.
> following the configuration page link I see
> Verify Configuration
> The active configuration can be verified in the startup banner, e.g. the
> active configuration file:
> config file(s) : /etc/rabbitmq/rabbitmq.config
> which I'm not seeing. I have an empty /etc/rabbitmq, and when I stop and
> restart rabbitmq I don't see any mention of a config file.
> On Thu, Mar 15, 2012 at 5:59 PM, Emile Joubert <emile at rabbitmq.com> wrote:
>> Hi John,
>> On 15/03/12 20:54, John Stoner wrote:
>> > OK, I don't think it's the firewall. 4369 is open to TCP (we tried
>> > adding UDP. Didn't help). Plus when I do a tcpdump, I see packets
>> > received on small01 on 'rabbitmqctl cluster rabbitmq-small01-dev'.
>> The EPMD port is necessary but not sufficient. From the details provided
>> in your previous email you would have needed to open port 57641 also.
>> This is a random port. Do you see packets on this port in your network
>> I would suggest temporarily eliminating the firewall entirely for
>> debugging purposes. See the firewall section on the clustering page for
>> configuration details:
> 'In knowledge is power; in wisdom, humility.'
'In knowledge is power; in wisdom, humility.'
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